asyncapi-operation-reply validates the optional reply object on an operation. Replies need valid channels, valid message references, and complete address information.

Why did this violation appear?

The reply object points at a missing channel, contains no messages, references a missing message, or has an incomplete address.

Bad example

asyncapi: 3.1.0
operations:
  getUser:
    action: send
    reply:
      channel:
        $ref: '#/channels/missing'
      messages: []

Good example

asyncapi: 3.1.0
channels:
  userReplies:
    address: users/replies
operations:
  getUser:
    action: send
    reply:
      channel:
        $ref: '#/channels/userReplies'
      messages:
        - $ref: '#/components/messages/UserReply'
components:
  messages:
    UserReply:
      payload:
        type: object

How do I fix this violation?

Make the reply channel and message references explicit, existing, and non-empty.